75=-6-3(-4x-9)

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Solution for 75=-6-3(-4x-9) equation: 



75=-6-3(-4x-9)

We move all terms to the left:

75-(-6-3(-4x-9))=0



We calculate terms in parentheses: -(-6-3(-4x-9)), so:

-6-3(-4x-9)

determiningTheFunctionDomain
-3(-4x-9)-6

We multiply parentheses

12x+27-6

We add all the numbers together, and all the variables

12x+21

Back to the equation:

-(12x+21)



We get rid of parentheses

-12x-21+75=0

We add all the numbers together, and all the variables

-12x+54=0

We move all terms containing x to the left, all other terms to the right

-12x=-54

x=-54/-12

x=4+1/2

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